EP4381722A1 - Verfahren zur bestimmung eines geeigneten zeitpunkts zur übermittlung von datenpaketen von einem backend an wenigstens eine erste steuereinrichtung eines kraftwagens - Google Patents
Verfahren zur bestimmung eines geeigneten zeitpunkts zur übermittlung von datenpaketen von einem backend an wenigstens eine erste steuereinrichtung eines kraftwagensInfo
- Publication number
- EP4381722A1 EP4381722A1 EP23726047.6A EP23726047A EP4381722A1 EP 4381722 A1 EP4381722 A1 EP 4381722A1 EP 23726047 A EP23726047 A EP 23726047A EP 4381722 A1 EP4381722 A1 EP 4381722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- backend
- triggered
- vehicle
- data packet
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1848—Time-out mechanisms
Definitions
- the invention relates to methods for transmitting data packets from a backend to at least a first control device of a motor vehicle according to the preamble of patent claim 1.
- such an exchange can be “offboard-triggered,” meaning that the exchange is triggered outside the vehicle.
- the initial data transmission to implement the corresponding functionalities takes place from the backend to the vehicle.
- the overall process usually corresponds to a “request/response pattern” in which the backend sends a data packet to the vehicle.
- An example of a “request” would be a command to lock the vehicle and the vehicle
- the successful processing of the data packet is then confirmed; an example of a “response” would be a confirmation: “Vehicle locked successfully”.
- the customer does not initiate these functionalities in/on the vehicle itself, but rather via a remote interface, such as a smartphone app, correspondingly “offboard”.
- Such an exchange can be “onboard-triggered”, which means that the exchange is triggered within the vehicle.
- the initial data transmission to implement the corresponding functionalities takes place from the vehicle to the backend.
- the overall process usually also corresponds to a “request/response pattern”, in which the vehicle sends one data packet to the backend and another
- An example of a “request” would be a command to update status data such as an ignition change or the locking status, with the backend then confirming to the vehicle that the data packet was successfully processed (response).
- These functionalities are either initiated by the customer in/on the vehicle, for example when the customer unlocks the vehicle, or initiated by the vehicle itself when, for example, the battery level drops, corresponding to “onboard”.
- the backend usually does not communicate directly with the control device that processes the data packet in the vehicle, but rather via a so-called telecommunications unit (TCU), which has a mobile radio module.
- TCU telecommunications unit
- the protocols used do not guarantee successful transmission or delivery of the data packet, at least not at the application level.
- messages from the TCU can only be received if it is reachable. According to the current state of the art, it is possible for a data packet to be lost on the communication path, both on the way from the backend towards the control device and in the opposite direction.
- US 9 179488 B2 already discloses a method for restoring a cellular connection between a vehicle telematics unit and a wireless carrier system.
- This method includes detecting a loss of cellular connection between a vehicle telematics unit and a wireless carrier system and accessing a technology ordering table (TOT) that orders a plurality of radio access technologies (RATs) according to desirability, which in turn are capable of use with the vehicle telematics unit.
- TOT technology ordering table
- RATs radio access technologies
- the method also attempts to restore the cellular connection, in particular through various procedural steps. From US 2019/0141023 A1 a method for configuring access to a vehicle network from a mobile device is known. In the event of an error occurring, a corresponding signaling sequence is started again.
- the US 2015/0133108 A1 discloses a method for offboard control of a telematics unit of a vehicle through a backend. Sending a request again is briefly discussed without going into further details.
- the object of the invention is to provide a method in which data packets that have been transmitted to the vehicle but not delivered are retransmitted to the vehicle at a suitable time, so that the data packets are more likely to be received by the vehicle.
- the invention relates to a method for determining a suitable time for transmitting data packets from a backend to at least one first control device of a vehicle, in particular a motor vehicle, in particular a passenger car, for controlling at least one functionality of the at least one control device.
- data packets are transmitted and received between the backend and the at least one control device, with the transmission being triggered offboard and/or onboard. It is also possible to transmit all data packets to different control devices for controlling different functions, with the transmission structure being provided with a prioritization, for example.
- a timer is triggered, in which confirmation information about the receipt of the transmitted offboard-triggered data packet by the backend is awaited .
- the confirmation information is received, the control of the functionality is confirmed and if the confirmation information is not received, the data packet is temporarily stored in a buffer of the backend for future transmission.
- the cached ones Data packets are transmitted again to the first control device during an onboard-triggered transmission of further data packets from the same or another control device.
- the timer should enable messages that were not delivered to the vehicle or data packets that were not transmitted to the respective control device to be resent/transmitted from the perspective of the backend at a suitable time.
- the timer detects that a message was most likely not delivered. Retransmission at an appropriate time is made possible via the onboard triggered message and the buffer.
- the solution for determining a suitable time for re-sending data packets in the case of offboard-triggered functionalities is done with the help of the onboard-triggered functionalities and under the assumption that the communication between backend and vehicle takes place via a request/response pattern and that vehicle can handle receiving the same data packets multiple times.
- the onboard-triggered functionality triggers a new attempt to transmit the data packets that were not transmitted if the offboard-triggered functionality failed. If there is no response in the case of offboard-triggered functionality for a certain period of time or after the timer has expired, it must be assumed in the backend that the corresponding data packet has not reached the vehicle or the control device. The backend must therefore temporarily store the data packet intended for the vehicle or for a control device.
- the suitable time or trigger for the re-sending or re-transmission of the data packet is then the successful receipt of data packets that the vehicle or the respective control devices send to the backend as part of an onboard-triggered functionality.
- the sending of these data packets is triggered by the vehicle or the respective control devices themselves and therefore independently of the offboard-triggered functionality, for example when the customer unlocks the vehicle or changes the ignition and usually takes place in a different context than that of the offboard-triggered functionality. triggered functionality.
- the receipt of a data packet from the vehicle or the respective control devices justifies the assumption that the vehicle or the control devices can be reached again and therefore data packets sent by the backend will also be received with a very high probability. This means that the probability of one individual transmission without query is lower than that of the method according to the invention, since at least one further transmission is carried out here.
- a check is carried out to determine whether the retransmitted data packets are necessary. This means that certain functionalities are checked in the buffer to see if they are necessary at the time the onboard-triggered functionality appears. For example, it is no longer necessary to secure a lock after getting into the car, which means that it can be deleted from the buffer again. To ensure security, for example, any functionality that was not performed can be logged and saved for further processing, which means that less storage space and working memory are required.
- the buffer is deleted after a successful onboard-triggered transmission.
- the cache can be deleted either as a direct consequence of the onboard-triggered functionality or as a delayed consequence, whereby the specification for deletion is specified by the OEM. In particular, the safety of the vehicle should be given priority.
- An embodiment of the invention has also proven to be advantageous, in which information about them is transmitted to a data receiver if transmissions of offboard-triggered data packets are not confirmed. This is advantageous due to the security precautions at the application level, since a user of the application receives a warning as soon as the backend receives confirmation information. This can lead to greater security for various functionalities, for example if the vehicle is not locked.
- a further second timer and / or further timers are triggered, in which the confirmation information about the receipt of the previously buffered data packet of the offboard-triggered
- the backend waits for the transmission to be sent again, and if it is not received again, a signal is generated to trigger an error message.
- the error message confirms with a certain probability a possible interruption of an interface between the backend and control device and informs the user or the OEM that a possible physical connection/interfaces or other components is/are defective.
- This invention is in the field of telematics and describes a method which, from the perspective of a vehicle backend, allows messages that were not delivered to the vehicle to be resent to the vehicle at an appropriate time.
- FIG. shows a schematic image diagram to illustrate a method according to the invention.
- identical and functionally identical elements are provided with the same reference numerals.
- FIG. shows an example of the application of the method according to the invention, in which at least one first control device 14a of a vehicle 16, in particular a motor vehicle, is used to determine a suitable time for transmitting data packets 10 from a backend 12 to the control at least one functionality of the at least one control device 14a.
- the data packets 10 are transmitted and received between the backend 12 and the at least one control device 14a, with the triggering of the transmission being triggered offboard B1 and/or onboard B2.
- a timer T is triggered, in which confirmation information 18 about the receipt of the transmitted offboard-triggered B1 data packet 10 by the backend 12 is waited for, with the confirmation information being received 18 the control of the functionality is confirmed and if the confirmation information 18 is not received, and thus if non-confirmation information 28 is transmitted, the data packet 10 is buffered in a buffer 20 of the backend 12 for future transmission.
- the non-confirmation information 28 from the vehicle 16 to the backend 12 is in particular the expiration of the timer T, which can be passed on to other entities. Eventually they will cached data packets 10 are retransmitted to the at least one control device 14a during an onboard-triggered B2 transmission of further data packets 10b.
- FIG. uses an example in which a customer/user 22 wants to have a functionality shown as pre-air conditioning of his vehicle 16, which is designed as an electric vehicle, configured via the OEM's smartphone app 26 in such a way that the pre-air conditioning on one The specified afternoon at 2 p.m. is activated in the vehicle 16, which involves an offboard-triggered B1 transmission of data packets 10 for this functionality.
- a pre-air conditioning command 24 is transmitted to the vehicle 16 via the backend 12.
- a request data packet 10a is first sent to the backend 12, then this data packet 10, which is designed as a command data packet, is sent from the backend 12 to the vehicle 16 and/or the control device 14a.
- the data packets 10, 10a differ in that the command data packet or data packet 10 applies between the vehicle 16 and backend 12 and the data packet 10a applies between backend 12 and customer/user 22.
- the backend 12 sends a corresponding data packet 10 with a pre-air conditioning command 24 for configuring the pre-air conditioning to the vehicle 16, which contains, among other things, the activation time. If the backend 12 does not receive the expected confirmation information 18 or a “response” to the sent data packet 10 within a certain period of time or within the timer T, it can be assumed that the data packet 10 does not reach the vehicle 16 or the control device 14a reached and the pre-air conditioning 24 was not configured according to the customer's wishes.
- the backend 12 waits according to the present method until the vehicle 16 sends another one Data packet 10b receives which was sent as part of an onboard-triggered B2 functionality, for example when the vehicle 16 connected for charging sends a new charge status to the backend 12.
- This data packet 10b which is not related to the pre-air conditioning 24, thus triggers a repetition of the buffered data packet 10, which has a very high probability is received by the vehicle 16 or by the control device 14a and thus leads to a configuration of the pre-air conditioning 24 in the vehicle 16 and corresponding confirmation information 18 to the backend 12.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Lock And Its Accessories (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022001837.3A DE102022001837B4 (de) | 2022-05-24 | 2022-05-24 | Verfahren zur Bestimmung eines geeigneten Zeitpunkts zur Übermittlung von Datenpaketen von einem Backend an wenigstens eine erste Steuereinrichtung eines Kraftwagens |
| PCT/EP2023/062403 WO2023227371A1 (de) | 2022-05-24 | 2023-05-10 | Verfahren zur bestimmung eines geeigneten zeitpunkts zur übermittlung von datenpaketen von einem backend an wenigstens eine erste steuereinrichtung eines kraftwagens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4381722A1 true EP4381722A1 (de) | 2024-06-12 |
| EP4381722B1 EP4381722B1 (de) | 2025-02-26 |
| EP4381722C0 EP4381722C0 (de) | 2025-02-26 |
Family
ID=82402910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23726047.6A Active EP4381722B1 (de) | 2022-05-24 | 2023-05-10 | Verfahren zur bestimmung eines geeigneten zeitpunkts zur übermittlung von datenpaketen von einem backend an wenigstens eine erste steuereinrichtung eines kraftwagens |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250330522A1 (de) |
| EP (1) | EP4381722B1 (de) |
| JP (1) | JP7808211B2 (de) |
| KR (1) | KR20240155310A (de) |
| CN (1) | CN119072916A (de) |
| DE (1) | DE102022001837B4 (de) |
| WO (1) | WO2023227371A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5011686B2 (ja) * | 2005-09-02 | 2012-08-29 | トヨタ自動車株式会社 | 遠隔操作システム |
| US9420405B2 (en) | 2013-11-13 | 2016-08-16 | General Motors Llc | Remotely controlling a vehicle telematics unit |
| US9179488B2 (en) | 2014-01-24 | 2015-11-03 | General Motors Llc | Vehicle telematics connection retry |
| JP6915996B2 (ja) * | 2017-02-03 | 2021-08-11 | トヨタ自動車株式会社 | リモート空調始動システム、サーバ |
| US10798079B2 (en) | 2017-11-07 | 2020-10-06 | Ford Global Technologies, Llc | Vehicle with mobile to vehicle automated network provisioning |
| JP2020167550A (ja) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | 通信装置、通信方法及びプログラム |
| CN112019579A (zh) | 2019-05-30 | 2020-12-01 | 比亚迪股份有限公司 | 车辆网关控制系统、方法及车辆 |
| EP3968601B1 (de) | 2020-09-11 | 2024-05-08 | Volkswagen Ag | Synchronisation einer kommunikation zwischen einem fahrzeug und einer backend-vorrichtung durch verwendung einer hash-meldung |
-
2022
- 2022-05-24 DE DE102022001837.3A patent/DE102022001837B4/de active Active
-
2023
- 2023-05-10 JP JP2024568442A patent/JP7808211B2/ja active Active
- 2023-05-10 CN CN202380035633.3A patent/CN119072916A/zh active Pending
- 2023-05-10 US US18/868,407 patent/US20250330522A1/en active Pending
- 2023-05-10 EP EP23726047.6A patent/EP4381722B1/de active Active
- 2023-05-10 WO PCT/EP2023/062403 patent/WO2023227371A1/de not_active Ceased
- 2023-05-10 KR KR1020247032294A patent/KR20240155310A/ko active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4381722B1 (de) | 2025-02-26 |
| WO2023227371A1 (de) | 2023-11-30 |
| EP4381722C0 (de) | 2025-02-26 |
| US20250330522A1 (en) | 2025-10-23 |
| CN119072916A (zh) | 2024-12-03 |
| JP2025517925A (ja) | 2025-06-12 |
| DE102022001837A1 (de) | 2022-08-04 |
| DE102022001837B4 (de) | 2023-06-01 |
| JP7808211B2 (ja) | 2026-01-28 |
| KR20240155310A (ko) | 2024-10-28 |
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